Driving mechanism



April 13, 1948. F. MILLER 2, 3

DRIVING MECHANISM Filed Jan. 8, 1945 2 hee'ts-sneet 1 April 13, 1948. MILLER 20 DRIVING MECHANISM Filed Jan. 8, 1945 2 Sheets-Sheet 2 IN VEN TOR.

Patented Apr. 13, 1948 FrankMiller, Chicago, Ill. J l

Application J anu ary s, 1e45, serial N6 571,91; s1 Claim. (01174-421 changeably usedfin connection with various power transmission systems, and which is provided with structure to accommodate a quantity of lubricant to be packed thereinto.

" Anotherfobject of my] invention is to provide a compact mechanism of the aforementioned character whioh is especiallyadaptable for belt drive, v t v A further object of my invention is to provide a stator, and a rotor in combination therewith;

the rotor having enclosed therein power driving mechanism; l A further object of my inventionflisto provide the complete is compact mechanism of the aforementioned I; character which is especially adaptable for gear drive, or transmissionjf i (A stilldfurtherfobject offmy invention is to provide a compact mechanism ofYthe aforementioned character whichis especially adaptable for chain and sprocket drive or transmissionl A stilllfurther object offmylinvention is to provide acom'pact mechanism ofthe aforementioned character which is simple in construction,

practical andefiicientinits application, use, and operation, and of suchelemental structure as to werrant economical production thereof inl q'uanieS. ,1 MM l .l

Other features, and ancillary objects, and advantages "to be derived from the application" and use of my invention will become readily apparent from an examination of the accompanying drawings, having particular reference to the ensuing description, wherein like symbols are used to designate like parts, and in which: a a i Fig. 1 is a perspective-view of one form of my invention. i

1 Fig. 2 is a thereof, i i i i a Fig. "-3 is a transversal cross-sectional view taken, substantially, on the line 3-3 of Figure 2. Fig. 4 is a" front view oi my invention showing a slight modification thereof, 1 Y Fig. 5 is ai'ront view showing another slightly modified form thereof.

transmission systems in order toprovide the Fig 6 "is a view similar to igure 5showii1g" an- Fig. '7 a fragmentarylongitudinal cross secj n ln w mb whst n,ei t ersi mm d fie'd ;form of my invention as applied to the varipu fo slc j w rt ans sion tems to Figure Referring, more "particularly" a 'of a support,

nd 3, my e nt bn iee r "generally, f designated 9 which 'provides suitable bearings; or statoli su l l n A or the rotor unit, generally, designated 8 j In this particular form; it is t be noted that thejrotor s is in the form ofa drum simulating a crown-shaped pulley, or a pulley with a crowned periphery, on which operates a belt li in order to transmit thepowerffrom therotor iltosonie prised of a base substantially; of U1 formation h n b ttqm P rtion 3 l t b vi e m] 3: nd tWP -r hts? tev hfa 61, forming a suitable compositearrangement rights -34 mb acing a"suitable foylindrical' recess in order to support thestatfirexten'sions and 139', the same being securely and fixedlyheld in placeby'meansof setscrews" 36; and being imbedded in the extensions l f'and 39 by the conical indentations 31 fo'rme'd 0n "messed extensions to preventlrotation of the saidextjensions;

The rotor st atum 8 is; enerally, comprised of a set "oi end flanges l0 secured to the cylindrical crown-shaped drum H by virtue "of set screws l2. Theflanges f l0 are; suitablyfrecessed in order 'to receive the" baII bea 'ih'g structures consisting of the inner races 26 'andthefiouter racesZI j eonfining therebetwen in "conventional' manner,

longitudinal cross-sectional view 4 -101 forrnfthe "bal l beariiigs proper. The said flanges III are also with entensions which are Pr v wa t-re s es, Z8 se i i cross-section inorder "to receive Lthe packing or ""Within"the drum l; "I" nsert twa flange-like structures Wright and leftrespectively,theright flange being provided: a stubsl ia'ft or extension; having an enlargedbortion lll and a; re-

duced portion 4|, amifalso a"iurther r educed portion 42 providing suitable shoulders to facilitate assemblywith respect toth'e flange structure Ill and the upright portion 34'of'thebase'fgen- 'erally, designated h The leftfhandflan'ge I4 "is provided with an' extensionfhaving a ennr eq n e fl-j nl t e md e v le e d n i l 2 anda terminal rdued end portion 39. Thesaid any of the lubricant escaping therefrom, prov id ing a mechanism which is not only compact in form, but which requires little or no attention whatsoever over long periods of time.

Intermediately between the said flanges 14,.

the motive power means 20 is connected, in'this particular instance it has been, preferableptoemploy electro-motive power means, which is provided with a series of feet or bosses 21 on each end .thereof,.so that the same mayzbesecured to the flanges 14 by means of screws 22. The .said

motive power means '20 is provided with an electrical outlet from which emanate the connecting wires 23.; the said wires being :passed thru the re- -.cess .32 within theshaft extension 49 and ultimately thru the borewithin abushing 43 and suitable metal l protection in the form of tubing '44, which is connected to theoutlet .box 45, .pro-.

vided with a receptacle 46, whichmay be in turn connected .to a suitable source of electrical current supply. The electrical outlet box 45may be conveniently mounted on suitably machined surfaces, or pads 41 provided on the uprights 34 of, the base or support, generally, designated 9.

To the left flange .I4 I secure. a bearing stud 49 which retains .rotatably the shaft 5.0 to which I secure the intermediate gear 53 held rotatably by a collar L secured ,to the rotating shaft. 50

by means of arpin 52. The intermedia-tegear 53 is driven by the pinion 56, formed on the extension 55, protruding =thru the flange l'4, and being integralwith the armature of the motor 20, furnishing the initial .l:lr-i-v'ing meansthru [the intermediatehgear :53 causing the annular gear 48 to be rotated; the ,said,gear .48, having teeth 51, and .being firmly'secured to the drum .H by virtue of screws 54,. will causethe said drum to rotate in frictional or tractional-contact with the belt I3, and the crowned 'surface \Ofthe drum M. will cause the belt 13 to be driven centrally of the :drum, thus in turn drivingany machine, unit, or-

device, that is to be driven, and which may be connectedtotheother-end of the belting ortransmission l3. Theextensiondimayrequire relief at-58toc1eartheplnion-55.-

- In Figure 4, Lsh-owa slightly modified :form of my invention, wherein the rotor drive .H is not necessarily of .crown configuration inasmuch as.

integrally formed therewith, I'Ip'rovide an enlargedringgear portion-50in whichlare cut a series of gear teeth so as to mesh with the g-ear teeth of any unit to bedrivem 'suchas is suggestively,

illustrated at -61; thus the driving mechanism" comprising the motive power ele'ment, or unit, for a. transmission system which instead of using .a belt drive, in this .form shown in Figure 4, may be applicable to a :gear drive type-of transmission. t may be found desirable in some instances to modify the structure of Eigure 4.150 simulate the structure -of .Figure v.5 in which event a duplex or more balanced systemfortdr'iving maybe utilized, wherein .two gear elements-52, form part ,of the d ing me e 'sm are ssa e-- ment, or relationship, with two driven units designated 63.

In Figure '7, I indicate a slightly modified form of my invention to render the same adaptable for sprocket and chain drive, or chain type of transmission, in which event the outer drum l l is not crowned, but is provided with an enlarged centrally positioned cylindrical portion in which are ,cut a series of sprocket teeth 66 to engage with a suitable chain which is enmeshed: therewith in orderto provide motivation -to 'som-e 'driven unit at a remote point with respect to the driving unit,

generally, designated 8.

In Figure 6, I show a slightly modified form of the sprocket and chain transmission means ing thru the motor unit 20 causes the armature thereof to rotate, in turnrotating the pinion shaft 55, the teeth 56 thereof transmitting motion to the intermediate idler gear 53, in turn rotating the annular gear 48, which being secured to the drum H, causes the said drum ii to be rotated I thus furnishing traction transmission to thelbelt 13, or the driven gears .Bl or 53, or the transmis- .sion chain 65. I Q a The flanges H) are provided with pipe tapped openings which arefsealed by screw seated pipe plugs 35, which maybe removably positioned therein, in order to furnish a suitable connection for an 'adapter fitting designated Bl .to engage removably a pressure lubricatinggunso that the confines between the right flange 'lil as well as the confines between the left flange l4 andthe left flange In of Figure 2 may be packed with grease which is retained within these confines by virtue of seal ,packings l6 and 29 respectively.

Thus, it can be seen that, I have provided a compact driving type of unit havin all its elemental structure concealed within the periphery may also be packed with lubricant which is maintained under seals so that the device requires very little attention. The arrows indicated in Figure 2illustrate and the vent openings 59 are provided for the purpose of allowing the air currents "to circulate between the flanges l4, where the ;mo-

tor is situated, and permit air currents to enter within this compartment circulating therethru in order to provide suitable cooling'eflfects to the "motor unit 20. The said flanges lain-addition to being held together'by the motor unit 2 i), =niay further be maintained in perfect alignment by the stud bolts l8 which have "reduced threaded portions at each of their ends in order to receive the lock-nuts l9 thus forming a rigid and Icempact unit for the entire structure. The uni 1118 21150 constructed so that accessibility to the motor, and for repairto any oftheelements may.-be.-read ily and easily made byremoVing-thetcaps 35,1and

any one of the flanges 1.0,. I

The unit comprising my invention :;may be manufactured to providerdiiferent speed rotors by furnishing different internal gearing ratio combinations. It is also to be noted that the shafts and their support comprise the stator of my unit, whereas the balance of the mechanism that of the rotor, the combined stator and rotor providing an ideal compact construction.

I believe, I have, herein, described and explained, rather succinctly, the nature of the construction, and the operation and utility of my invention, and inasmuch as the same is susceptible of many alterations, modifications, and improvements, I, hereby, reserve the right to any and all such modifications and improvements coming within the scope and spirit of my invention, also those impliedly suggested by the accompanying drawings, as well as those that may be derived from the purview of the foregoing description.

Having thus described and revealed my invention, what I claim as novel and desire to secure by Letters Patent is:

A compact driving unit comprising, a stator including, a base having 'two upright support arms, flanged elements provided with hollow stub shaft extensions rigidly secured to the said upright support arms, seal means secured to the peripheries of the flanges of the said flanged elements, motive power means confined between the said flanges and beingsecured thereto and provided with electrical connection means confined in one of the said hollow stub shaft extensions the terminus thereof secured to a source of electrical supply, a driving pinion co-extensive with the motor shaft passing thru a recess in the flange of one of said flanged elements, and an intermediate gear rotatably secured tothe flange of one of said flanged elements and positioned in meshing relationship with the said driving pinion, the said driving pinion being eccentrically positioned with respect to the axis of said hollow stub shaft extensions; and a rotor including, a drum,

drum flanges secured to each end of said drum,

the said drum flanges provided with bearing means rotatably secured to the said hollow stub shaft extensions, and further provided with seal means fitted over the said hollow stub shaft extensions, the said drum being rendered rotatably operative about the flanges of the said flanged elements, the said first-mentioned seal means in conjunction with the said second-mentioned seal means defining outer compartments adapted to retain a volume of lubricant, means on the said drum flanges providing access to the said outer compartments permitting lubricant under pressure to be packed and retained therein, the said flanged elements positioned so as to define an intermediate compartment for confining the said motive power means therein, annular gear means secured internally of said drum and positioned in meshing relationship with the said intermediate gear, and ventilating openings in the periphery of the said drum communicating with the said intermediate compartment establishing an air circulating path thru the other of the said hollow stub shaft extensions to effectuate cooling of the said motive power means.

FRANK MILLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,748,247 Scribner Feb. 25, 1930 1,812,651 Gullberg June 30, 1931 2,108,367 Christian Feb. 15, 1938 2,270,980 Tidball Jan. 27, 1942 2,173,339 Myers Sept. 19, 1939 2,184,669 Hansen Dec. 26, 1939 

